In the movie "Miss Peregrine's Home for Peculiar Children" Jake was saved by the peculiar children while he was into a pub. An invisible child made pots and glasses fly all around and another start a fire on the pub's door.

At about 36 minutes of the movie there's a dialogue:

a child "Miss Peregrine, there's a policeman at the door. He says it's about the pub!"

Miss Peregrine turns a blind look to Emma (hope my English is correct here) and says: "We'll discuss this later, Emma." then go to the house.

Jack says: "It wasn't their fault. Honestly, they were just trying to help."

Emma smiles. Miss Peregrine smiles too, then go away.

After Miss Peregrine has left, Emma says "Thanks. You're not as wet as I thought."

What does it mean "wet" in this context?